APA (7th ed.) Citation

Wagner, S., & Witzel, A. (1992). Intraday variability of active galactic nuclei: Radio and optical observations. Extragalactic radio sources - from beams to jets.

Chicago Style (17th ed.) Citation

Wagner, Stefan, and Arno Witzel. "Intraday Variability of Active Galactic Nuclei: Radio and Optical Observations." Extragalactic Radio Sources - from Beams to Jets 1992.

MLA (9th ed.) Citation

Wagner, Stefan, and Arno Witzel. "Intraday Variability of Active Galactic Nuclei: Radio and Optical Observations." Extragalactic Radio Sources - from Beams to Jets, 1992.